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4 résultats pour : william jenifer powell

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Slide Rule, William J. Powell, ca. 1930s. Creator: Keuffel & Esser Co..
HRM21A88_458

Slide Rule, William J. Powell, ca. 1930s. Creator:...

Circular Slide Rule, William J. Powell, 1935. Creator: Unknown.
HRM21A88_460

Circular Slide Rule, William J. Powell, 1935. Crea...

Drafting pen owned by William J. Powell, ca. 1920s. Creator: Unknown.
HRM21A88_462

Drafting pen owned by William J. Powell, ca. 1920s...

Drafting pen owned by William J. Powell, ca. 1920s. Creator: Unknown.
HRM21A88_463

Drafting pen owned by William J. Powell, ca. 1920s...